 However, the outbreak of World War II interrupted his work, and his own labours on this composition continued until his death in 1959.The score was lost after Martinů's death, until 2002, when Aleš Březina discovered the piano reduction of the score among a private collection of papers.After Březina returned to Prague to have this adapted into a full orchestral score, the Czech publishing firm DILIA revealed that a full score already existed in their archives.